Felted Blister Scarf

This is a great last minute gift idea, or something fun to do with ugly sweaters you may recieve as gifts. I saw it on craftster, via this article on Knitty.

I used assorted coins to make my blisters, hoping the different sizes would add an extra element of texture and dimension. The size changes aren't very apparent though. I mostly used pennies...maybe it I only did quarters and dimes it would be more obvious?
I also don't think this was 100% wool, despite the itchiness.

My sister is home from school and was a gracious, if itchy, model.